How can I make Android application data persistent?

Question

I am new to Android development and am creating a "ToDoList" app in Android.

I used a SQLlite database to save the list in a database table, and it saved data perfectly.

I don't have an Android phone, so I can check my application only using an emulator.

After saving tasks in the database, if a user restarts the phone then will my task list in database be deleted or not? If it will be deleted then how can I make the data in the table persistent?

score 3 · Accepted Answer · answered Apr 12 '11 at 01:58

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The table definitely stays if the user simply reboots the phone. Off the top of my head, I think the only way to get rid of the table completely is to either:

Delete it (programmatically or via the sql command line)
Uninstall the application

Simply upgrading your application to a new version will not delete your existing tables (so long as you use the same keystore when making the APK.)

-- Dan

answered Apr 12 '11 at 01:58

debracey

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The database will also get deleted through Settings->Applications->Manage Applications->[App Name]->Clear Data – Phil Lello Apr 12 '11 at 02:01
Ahh - forgot about that one! Thanks! – debracey Apr 12 '11 at 02:07

score 0 · Answer 2 · edited May 23 '17 at 12:19

0

For saving persistent application data Android offers various options.

A comparison between SQLite and SharedPreferences for storing persistent data.

Considering you are developing a ToDoList app for Android, I would recommend sticking to SQLite.

edited May 23 '17 at 12:19

Community

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answered Apr 12 '11 at 01:58

Primal Pappachan

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How can I make Android application data persistent?

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